Title:
BLOCK COPOLYMER
Document Type and Number:
WIPO Patent Application WO/2023/243649
Kind Code:
A1
Abstract:
This block copolymer has a block structural unit (A) mainly composed of a polylactic acid unit (a) and a block structural unit (B) mainly composed of a polyester unit (b), wherein: the polyester unit (b) contains units derived from aliphatic diol (b1) and aliphatic dicarboxylic acid (b2); the aliphatic diol (b1) is an aliphatic diol having a carbon number of at least 4 and having an alkyl group as a branched chain; and the number-average molecular weight of the block structural unit (B) is 30,000 to 200,000 (exclusive of 200,000).
More Like This:
| JPH04304257 | POLYESTER COMPOSITION |
| JP4047160 | Film made of aliphatic polyester copolymer |
| JP2006206670 | BIODEGRADABLE RESIN COMPOSITION AND RESIN SHEET |
Inventors:
FUKUHARA TADAHITO (JP)
TAKAI JUNYA (JP)
SAKON KAZUKI (JP)
KONISHI HIROYUKI (JP)
TOSHINARI KENTA (JP)
TAKAI JUNYA (JP)
SAKON KAZUKI (JP)
KONISHI HIROYUKI (JP)
TOSHINARI KENTA (JP)
Application Number:
PCT/JP2023/022010
Publication Date:
December 21, 2023
Filing Date:
June 14, 2023
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
C08G63/60
Foreign References:
| JP2011153275A | 2011-08-11 | |||
| JP2013160914A | 2013-08-19 | |||
| JP2014001261A | 2014-01-09 |
Other References:
ZAHIR LAMYA, KIDA TAKUMITSU, TANAKA RYO, NAKAYAMA YUUSHOU, SHIONO TAKESHI, KAWASAKI NORIOKI, YAMANO NAOKO, NAKAYAMA ATSUYOSHI: "Synthesis of thermoplastic elastomers with high biodegradability in seawater", POLYMER DEGRADATION AND STABILITY, BARKING, GB, vol. 184, 1 February 2021 (2021-02-01), GB , pages 109467, XP093118207, ISSN: 0141-3910, DOI: 10.1016/j.polymdegradstab.2020.109467
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
Download PDF: